You could become the worlds most famous magician without any effort, make a gazillion dollars without cheating, and use your fame and fortune to help millions (especially since you could interact and team up with many other celebrities).
I'd do a few live shows, a few "specials" on TV etc, to get my name well known, start investing the money big time, and networking with celebs, getting charities going etc, and before you know it I wouldn't even need my powers anymore to make a big difference.
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